The genetic basis of individual differences in attitudes, including personality traits, physical characteristics, and academic achievement. https://www.ncbi.nlm.nih.gov/pubmed/11414369 Wow....... So this  study and claim are  saying the person IQ , education achievement and academic achievement is base on genetics? If person dos really bad in school vs some one has PHD or tow PHD's is base on genetics? In others words if you smart or dumb is base on genetics? Or how well you